KR101195751B1 - Foldable bicycle using gears - Google Patents

Abstract

PURPOSE: A foldable bicycle is provided to minimize the volume of a bicycle in a folded state and to minimize the weight of the bicycle with the simple configuration of a gear module. CONSTITUTION: A foldable bicycle using a gear comprises a gear module(100). The gear module is installed in one side of a bicycle frame and comprises one or more gears. The gears rotate a rear wheels in a clockwise or a counterclockwise direction. The gears are installed to have an internal angle to a center axis is within 10 degree to 21 degree based on the longitudinal center axis of the bicycle.

Description

Folding bike with gears {FOLDABLE BICYCLE USING GEARS}

The present invention relates to a folding bicycle using a gear, and more particularly, to a folding bicycle configured to fold using a gear for the convenience of carrying and storage.

Modern society cannot travel by bicycle only to its destination due to the complicated road conditions. Therefore, each bicycle manufacturer is offering a variety of folding bikes that can be carried in the trunk of the car, or can be folded and unfolded in a short time.

These folding bikes take several folding styles, the most common of which are side folding. This method is a way to fold the bicycle sideways like a door by releasing the locking ring by making a hinge-type hook in the middle of the top tube of the bicycle as shown in FIG.

Another way is to set the longitudinal axis to a specific point, The rear tires overlap at similar points. This method can utilize the rolling characteristics of the tire through an operation of lifting the vehicle body as shown in FIG. 2 in a manner different from the side folding method.

However, when folding in the longitudinal direction, it is not possible to completely fold the body with a single fold, and most of the times, since multiple structures such as the seatpost (saddle column) need to be folded again.

As described above, the folding method of the bicycle has various forms, but since all the operations are performed manually, several operations are required depending on the number of folding and a lot of time is required. It is also difficult to restore the folded state back to its original state without detailed explanation unless it is experienced.

As one example, a configuration of a folding bicycle according to the prior art is shown in side view in FIG. Referring to Figure 3, the frame of the bicycle frame 1 is formed. The handle stem 5 is rotatably installed through the head tube 3 provided at the tip of the frame 1, and the handle 7 is provided at the tip of the handle stem 5. The steering wheel 7 determines the direction in which the bicycle is driven by the user's operation. The handle 7 is provided with a brake handle (not shown).

The upper end of the handle stem 5 is provided with a fixing mechanism 9 for attaching and detaching the handle stem 5 including the handle 7 to the head tube (3). The fixing mechanism 9 is provided with a locking lever 10 so that the user can easily separate the handle stem 5 from the head tube 3.

In addition, the frame 1 is provided with a hinge unit 12. The hinge unit 12 becomes a center for the folding and unfolding operation of the frame 1. The hinge unit 12 is provided with a locking lever 13 so that the hinge unit 12 is locked or unlocked so that the frame 1 can be folded and unfolded.

In addition, the frame 1 is provided with a saddle 15. The saddle 15 is a part where the user sits. The head fork (3) provided at the front end of the frame (1) is connected to the handle stem (5) is provided with a front fork (17). At this time, the front fork 17 is rotated integrally with the handle stem (5). The front wheel 18 is rotatably supported by this front fork 17. In addition, the rear wheel 19 is rotatably installed at the rear end of the frame 1.

A pedal 20 and a chain 22 for transmitting a user's foot force to the rear wheel 19 are provided in the frame 1. The chain 22 is wound on a driven sprocket 23 installed coaxially with the center of rotation of the driving sprocket 21 and the rear wheel 19 rotated by the pedal 20, and transfers power therebetween.

In the folding bicycle having such a configuration, the front end and the rear end of the frame 1 are folded to overlap each other about the hinge unit 12, and the handle stem 5 is fixed from the head tube 3 to the fixing mechanism ( Release the lock of 9) to separate.

However, the above-described conventional techniques have the following problems.

That is, when the front end and the rear end of the frame 1 are folded to overlap each other around the hinge unit 12 provided at the middle one side of the frame 1, there is a problem that the width thereof becomes relatively thick in the folded state of the bicycle. .

In addition, when the frame 1 is viewed in plan, the user can stand on one side of the bicycle in a manner of folding the frame 1 that is folded around the hinge unit 12 in a clockwise or counterclockwise direction, and thus the hinge unit 12. In a state where one side of the frame 1 is fixed to the center, the other side of the frame 1 should be rotated so that the frame 1 overlaps.

However, the frame 1 has a problem such that the rotation is cumbersome, such as the front wheels 18 and the rear wheels 19 are formed at both ends of the hinge unit 12, respectively.

As such, even when the frame 1 is rotated about the hinge unit 12, there is no configuration that can fix the frame 1 in a folded state, and thus the folded state is slightly unfolded when the bicycle is transported in the folded state. There is a problem that becomes cumbersome.

Korean Utility Model Registration No. 20-0276448 (announced on 22 May 2002) Republic of Korea Utility Model Registration No. 20-0392225 (August 19, 2005)

Accordingly, an object of the present invention is to improve the folding structure of the existing folding bicycle to minimize the volume in the folded state, but to simplify the operation, even in a narrow space such as the front, rear seat or trunk of the home or office and the vehicle And it is to provide a folding bike using a gear to facilitate storage and to be deployed quickly and easily even in use.

In order to achieve the above object of the present invention, in one embodiment of the present invention, in the folding bicycle, the gear is installed on one side of the bicycle frame to rotate the rear wheel clockwise or counterclockwise along the longitudinal direction of the bicycle It provides a folding bicycle using a gear, characterized in that the gear module is configured to include one or more.

The folding bicycle according to the present invention can minimize its volume in a folded state, but can be easily carried and stored in a narrow space such as a front seat, a rear seat or a trunk of a home or office and a vehicle by simplifying the operation.

In addition, the present invention is configured so that the user can quickly and simply deploy and use regardless of the order and method, and improves usability, and provides satisfactory performance for safety, durability of the bicycle body, appearance, and the like. For example, since the present invention employs a gear, when the user applies force to the saddle, another gear is automatically folded by the reaction force of the gear, thereby providing a semi-automatic effect in which the rear wheel is folded.

In addition, the present invention maintains the size enough for adults to ride in the use mode, so that the front and rear wheels of the bicycle facing each other in the storage mode to reduce the length to a minimum and transport by using the cloudiness of the front and rear wheels can do. In the present invention, the interference between the saddle and the handlebar and the front wheel and the rear wheel is not generated after the final folding is completed.

Furthermore, the present invention can switch the bicycle to the storage mode or the use mode by a simple operation of rotating the saddle clockwise or counterclockwise, thus making it easy to switch modes. In other words, by omitting the process of flipping the front or rear of the frame to the side, the saddle can be rotated up and down so that the bicycle can be folded in the form of folding wheels. Can be.

In addition, the present invention does not require a locking device to prevent the folding because the bicycle is not bent left and right unlike the conventional side folding method. This is because the bicycle is not folded up and down because all the load acts as the ground while driving.

Furthermore, the folding method applied to the present invention reduces the folding time and reduces the force required for folding, compared to the multiple folding method with the longitudinal folding. In addition, the present invention can minimize the weight of the bicycle because the gear module used for folding adopts a configuration that is not complicated.

1 and 2 is an external view showing a folding process of a conventional folding bicycle.
3 is a perspective view showing a conventional folding bicycle.
4 is a front view showing a folding bicycle according to an embodiment of the present invention.
5 is a partially enlarged perspective view illustrating a gear module according to an exemplary embodiment of the present invention.
6 is a schematic view for explaining the gear module of FIG. 5.
FIG. 7 is a transmission plan view for explaining the gear module of FIG. 5.
8 is a perspective view for explaining a storage mode of the folding bicycle according to an embodiment of the present invention.
9 is an external view illustrating a folding process of a folding bicycle according to an embodiment of the present invention.
10 is a front view showing a folding bicycle according to another embodiment of the present invention.
FIG. 11 is a perspective view illustrating the folding bicycle of FIG. 10.
12 is an exploded perspective view for explaining a gear module according to another embodiment of the present invention.
13 is a front view for explaining a storage mode of a folding bicycle according to another embodiment of the present invention.
14 is a side view for explaining a storage mode of a folding bicycle according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a folding bicycle (hereinafter referred to as "folding bicycle") using a gear according to the preferred embodiments of the present invention.

4 is a front view showing a folding bicycle according to an embodiment of the present invention.

Referring to Figure 4, the folding bicycle according to the present invention is installed on one side of the bicycle frame gear module 100 consisting of one or more gears to rotate the rear wheel 280 clockwise or counterclockwise according to the bicycle longitudinal direction It includes. The gear module 100 may be composed of a first gear unit 110 and a second gear unit 120, the installation space of the first gear unit 110 and the second gear unit 120 as necessary. It may be configured to further include a cover bracket or auxiliary frame 160 to provide.

On the other hand, the folding bicycle handlebar 210, head tube 220, front wheel 230, fork 240, body 250, saddle 260, seat tube 270, rear wheel 280, stay 310, 320, a bottom bracket (not shown), a pedal 330, a crank 340, and the like may be included. Some of the above-described components may be omitted or a new configuration may be added according to a design purpose. It may be.

More specifically, the vehicle body 250 is also referred to as a frame with a name encompassing the top tube and the down tube. And the top tube means the upper tube of the front triangle portion of the frame, the down tube is connected to the head tube 220 and the top tube as the lower tube of the front triangle portion of the frame.

The head tube 220 is a place where the fork 240 is inserted into the short tube where the top tube and the down tube meet, and the seat tube 270 is the seat post is inserted into the tube below the saddle 260. This is where.

The stay is a name encompassing a seat stay and a chain stay. Here, the seat stay 310 is a tube connected obliquely to the rear wheel 280 axis from the seat tube 270, the chain stay 320 is a tube connected to the rear wheel 280 axis from the seat tube 270, It is level with the chain.

The bottom bracket is abbreviated as BB, which is a rotation shaft of the crank 340, and the crank 340 is a component that holds the chainring (three gears) while being connected to the BB, and the pedal 330 Is connected to the end of the crank 340, the place where the user puts the foot is used clipless pedal or toeclipdal pedal.

Hereinafter, each component of the gear module 100 will be described in more detail by dividing into two embodiments with reference to the drawings.

5 is a partially enlarged perspective view illustrating a gear module 100 according to an embodiment of the present invention, and FIG. 6 is a schematic view for explaining the gear module 100 of FIG. 5.

5 and 6, the gear module 100 according to an embodiment of the present invention may further include a first cover bracket 140 and a second cover bracket 150.

The first cover bracket 140 is provided to connect the vehicle body 250 and the saddle 260 to provide an installation space of the first gear unit 110, between the vehicle body 250 and the saddle 260, Preferably, it is installed between the vehicle body 250 and the seat tube 270.

The first cover bracket 140 covers the first gear unit 110 from the outside to prevent the clothes or fingers from being caught in the first gear unit 110.

The second cover bracket 150 is provided to connect the vehicle body 250 and the rear wheel 280 to provide an installation space of the second gear unit 120, between the vehicle body 250 and the rear wheel 280, Preferably, it is installed between the vehicle body 250 and the seat stay 310.

 The second cover bracket 150 covers the second gear unit 120 from the outside to provide a function of preventing clothes or fingers from being caught between the first gear unit 110 and the second gear unit 120. do.

If necessary, when the first cover bracket 140 and the second cover bracket 150 are in contact with each other on the contact surface of the first cover bracket 140 and the second cover bracket 150, the use of a bicycle Magnets (not shown) may each be provided to provide stability. Here, the magnets act as a attraction force to each other, and a strong attraction force acts on a pair of magnets that are normally in contact with each other, so that the first cover bracket 140 and the second cover bracket 150 are not spaced apart from each other. When the external force is applied to each other by separating the first cover bracket 140 and the second cover bracket 150 can be composed of a structure, for example, a button magnet.

5 and 6, the gear module 100 according to an embodiment of the present invention includes a first gear unit 110.

The first gear unit 110 is installed between the vehicle body 250 and the seat tube 270 connected to the saddle 260 to rotate the saddle 260 in the longitudinal direction of the bicycle, clockwise and counterclockwise Through the rotation of the saddle 260 provides a function to fold.

Specifically, the first gear unit 110 is provided in the center of the first gear 111, the first gear 111, the first gear pin 112 for transmitting a rotational force to the first gear 111, and One side is connected to the first cover bracket 140, and the other side corresponding to the one side is connected to the first gear pin 112, the first gear pin (in accordance with the counterclockwise movement of the first cover bracket 140) It consists of a first hinge 113 for rotating the first gear pin 112 with respect to the central axis of 112.

Here, as shown in FIG. 7, the first gear 111 has an internal angle of 10.0 ° or more, preferably 10.0 ° to 17.0 °, and specifically about 13.5 ° with the central axis based on the longitudinal center axis of the bicycle. It is preferable to install to form. This is to allow the saddle 260 rotated counterclockwise by the user's external force to overlap with the handlebar 210 without interference.

Here, if the inner angle formed between the longitudinal center axis of the bicycle and the first gear 111 is less than 10.0 °, the width and size of the front wheel 230 and rear wheel 280 of the bicycle, the body 250 and the seat stay ( In the storage mode of the present invention in which the gears are installed between the 310, interference may occur between the front wheel 230 and the rear wheel 280. In addition, when the cabinet exceeds 17.0 °, the separation distance between the front wheel 230 and the rear wheel 280 overlapping in the storage mode is increased, thereby increasing the overall volume of the folded bicycle, thus reducing storage and transportability in the storage mode. .

In other words, when the first gear 111 is installed on the same line as the central axis without forming a constant angle with the central axis, the rotated saddle 260 may collide with the handlebar 210.

8 is a perspective view for explaining a storage mode of the folding bicycle according to an embodiment of the present invention.

Referring to FIG. 8, when the user applies an external force to the saddle 260 to convert the bicycle from the use mode to the storage mode, the first hinge 113 according to an embodiment of the present invention. The saddle 260 is rotated in a counterclockwise direction, preferably 100 ° to 150 °, more preferably about 125 ° so that the saddle 260 can be superimposed on the handlebar 210. It is good.

In addition, when the user applies an external force to the saddle 260 to convert the bicycle in the storage mode into the use mode, the first gear unit 110 rotates the saddle 260 clockwise based on the first hinge 113. Rotation provides a function to control the saddle 260 to return to its original position.

5 and 6, the gear module 100 according to an embodiment of the present invention includes a second gear unit 120.

The second gear unit 120 is installed between the vehicle body 250 and the seat stay 310 connected to the rear wheel 280 to rotate the rear wheel 280 in the longitudinal direction of the bicycle, clockwise and counterclockwise Through the rotation of the rear wheel 280 provides a function to be folded. At this time, the second gear unit 120 rotates the rear wheel 280 in the opposite direction of the saddle 260 to minimize the volume of the folded bicycle.

Specifically, the second gear unit 120 is the second gear 121, and one side is connected to the second cover bracket 150, the other side corresponding to the one side is connected to the second gear 121, the second gear It consists of a second hinge 123 for rotating the second cover bracket 150 in the clockwise direction in accordance with the rotation of (121). In this case, a second gear pin 122 may be provided at the center of the second gear 121.

More specifically, the second hinge 123 is a curved plate coupled to a portion of the edge of the second gear 121, as shown in Figures 5 to 7, and one side is connected to the curved plate and the other side corresponding to the one side is a bicycle It may be composed of a first connecting plate formed to be located on the central axis of the longitudinal direction of the, and a second connecting plate connected to the other side of the first connecting plate and coupled to the second cover bracket 150. In this case, the curved plate, the first connecting plate and the second connecting plate may be integrally formed.

If necessary, when the user applies an external force to the saddle 260 to convert the bicycle into the storage mode as illustrated in FIG. 8, the second gear unit 120 may rotate the rear wheel 280 based on the second hinge 123. The rear wheel 280 may be configured to be superimposed on the front wheel 230 by rotating clockwise, preferably 80 ° to 130 °, more preferably about 105 °.

In addition, when the user applies an external force to the saddle 260 to convert the bicycle in the storage mode into the use mode, the second gear unit 120 rotates the rear wheel 280 in a counterclockwise direction based on the second hinge 123. By rotating to provide a function to control the rear wheel 280 to return to the original position.

5 and 6, the gear module 100 according to an embodiment of the present invention may further include a fastening bracket 130.

The fastening bracket 130 has a through hole into which the first gear pin 112 and the second gear pin 122 are inserted, and is coupled to the first gear pin 112 and the second gear pin 122. Fixing force is provided to the first gear 111 and the second gear 121 to maintain the first gear 111 and the second gear 121 is engaged. In this case, the through hole includes a first through hole into which the first gear pin 112 is inserted and a second through hole into which the second gear pin 122 is inserted.

9 is an external view illustrating a folding process of a folding bicycle according to an embodiment of the present invention.

Referring to Figure 9, for the folding process of the bicycle according to the invention it is necessary to lift the saddle 260.

As such, when the user lifts the saddle 260 of the bicycle, the first cover bracket 140 connected to the saddle 260 is rotated counterclockwise.

When the first cover bracket 140 is rotated in the counterclockwise direction, the first hinge 113 connected to the first cover bracket 140 provides a rotational force to the first gear pin 112 so that the first gear pin 112 is rotated. ) Is rotated, and then the first gear pin 112 provides a rotational force to the first gear 111, the first gear 111 is rotated.

And when the first gear 111 is rotated, the second gear 121 meshed with the first gear 111 is rotated in the opposite direction of the first gear 111 in accordance with the rotation of the first gear 111, Accordingly, the second gear 121 provides a rotational force to the second gear pin 122 so that the second gear pin 122 is rotated, and the second gear pin 122 rotates to the second cover bracket 150. The second cover bracket 150 is rotated in a clockwise direction.

As a result, when the user of the bicycle lifts the saddle 260 to move the saddle 260 to the handlebar 210, the gear module 100 installed in the bicycle to the rotational force of the saddle 260 rear wheel 280 The rear wheel 280 is semi-automatically moved so that the rear wheel 280 overlaps with the front wheel 230 by transmitting to the front wheel 230.

10 is a front view showing a folding bicycle according to another embodiment of the present invention, Figure 11 is a perspective view showing a folding bicycle according to another embodiment of the present invention, Figure 12 is a gear module according to another embodiment of the present invention ( It is an exploded perspective view for explaining 100).

Referring to FIG. 12, the gear module 100 according to another embodiment of the present invention may further include an auxiliary frame 160.

It is provided between the vehicle body 250 and the chainstay 320 of the auxiliary frame 160 to provide an installation space of the first gear unit 110 and the second gear unit 120, the bottom bracket in the adjacent position Can be installed. The installation position of the auxiliary frame 160 is determined in consideration of the size of the bicycle, it can be changed according to the design purpose.

The auxiliary frame 160 may be formed in a flat plate structure, and the first coupling hole and the second coupling hole may be spaced apart from each other so that the first gear 111 and the second gear 121 may be installed therein. Is formed. In this case, the first coupling hole and the second coupling hole may be formed to have a cylindrical structure.

Here, the auxiliary frame 160 forms an internal angle of 13 ° or more, preferably 13 ° to 21 °, and specifically about 17 ° with the central axis based on the longitudinal center axis of the bicycle, for example, the vehicle body 250. It is preferable to be installed in an inclined state. This is to allow the saddle 260 rotated counterclockwise by the user's external force to overlap the handlebar 210 without interference. In addition, the rear wheel 280 rotated in the clockwise direction by the user's external force is to have a structure that overlaps the front wheel 230 without interference with each other.

In other words, when the auxiliary frame 160 is installed on the same line as the central axis without forming a constant angle with the central axis, the rotated saddle 260 may collide with the handlebar 210.

The auxiliary frame 160 is provided with a first gear unit 110, more specifically, a first gear 111 and a third gear 115 to be described later, and the first gear 111 and the third gear 115. Has the same inclination angle as the auxiliary frame 160, and as a result, the first gear 111 and the third gear 115 are installed on the bicycle so that an internal angle of 13 ° to 21 ° is formed between the central axis. .

Here, if the inner angle formed between the longitudinal center axis of the bicycle and the first gear 111 is less than 13 °, the width and size of the front wheel 230 and rear wheel 280 of the bicycle, the body 250 and the chainstay ( In the storage mode of the present invention in which gears are installed between 320, interference may occur between the front wheel 230 and the rear wheel 280. In addition, when the cabinet angle exceeds 21 °, the separation distance between the front wheel 230 and the rear wheel 280 overlapping in the storage mode is increased, thereby increasing the overall volume of the folded bicycle, thus reducing storage and transportability in the storage mode. .

In the bicycle according to the present invention, when the auxiliary frame 160 is installed between the body 250 and the chainstay 320, the rear wheel 280 may be rotated about the auxiliary frame 160 so that the body 250 and the seat The stay 310 is formed in a removable structure. In this case, a pair of magnets may be installed on the contact surfaces of the vehicle body 250 and the seat stay 310 to apply attraction to each other.

Referring to FIG. 12, the gear module 100 according to another embodiment of the present invention includes a first gear unit 110.

The first gear unit 110 is installed on the auxiliary frame 160 adjacent to the vehicle body 250 and is coupled to the seat tube 270 connected to the saddle 260 to rotate the saddle 260 along the longitudinal direction of the bicycle. In this case, the saddle 260 is provided to be folded about the auxiliary frame 160 through clockwise and counterclockwise rotation.

In detail, the first gear unit 110 includes a first gear 111 and a third gear 115 facing each other, a first gear pin 112, a third gear pin 116, and a first internal portion. It is composed of a gear pin (117).

The first gear pin 112 is provided at the outer center of the first gear 111 to be fitted with one end of the seat tube 270, the third gear pin 116 of the third gear 115 It is provided in the outer center is fitted with the other end of the seat tube (270).

In addition, the first internal gear pin 117 is for interlocking the first gear 111 and the third gear 115 and is installed in the auxiliary frame 160 to be inserted into the first coupling hole of the auxiliary frame 160. Both ends thereof are coupled to an inner side surface of the first gear 111 and an inner side surface of the third gear 115.

The first inner gear pin 117 may be formed to have the same outer diameter as the inner diameter of the first coupling hole. In addition, the first internal gear pin 117 is fastened to the first gear 111 and the third gear 115 through coupling when used as a separate component from the first gear 111 and the third gear 115. Although it is possible to adopt the configuration, the configuration provided with an integral structure on the inner surface of either the first gear 111 or the third gear 115 may be adopted.

Here, since the first gear pin 112 and the third gear pin 116 are fitted to one end of the seat tube 270 and the tartan, respectively, the first gear part 110 has one end of the seat tube 270. Friction between the first gear pin 112 and between the other end of the seat tube 270 and the third gear pin 116, the saddle 260 connected to the seat tube 270 is moved when the seat tube The frictional force provided from 270 causes the first gear pin 112 and the third gear pin 116 to rotate.

As a result, when the first gear pin 112 and the third gear pin 116 are rotated, the first gear 111 and the third gear pin 116 coupled to the first gear pin 112 are rotated. The three gears 115 also rotate.

Referring to FIG. 12, the gear module 100 according to another embodiment of the present invention includes a second gear unit 120.

The second gear unit 120 is installed in the auxiliary frame 160 adjacent to the chainstay 320, is installed to engage the first gear unit 110, is coupled to the chainstay 320, saddle 260 ) Rotates the rear wheel 280 in the opposite direction of the saddle 260 in accordance with the rotation, the function of causing the rear wheel 280 to be folded about the auxiliary frame 160 through the clockwise and counterclockwise rotation. to provide.

In detail, the second gear part 120 includes a second gear 121 and a fourth gear 125 coupled to one end of the chain stay 320 facing each other and a second internal gear pin (not shown). do. If necessary, the second gear unit 120 may further include a second gear pin 122 and a fourth gear pin 126.

The second gear pin 122 is provided at the outer center of the second gear 121, the third gear pin 116 is provided at the outer center of the third gear 115.

In addition, the second internal gear pin is for interlocking the second gear 121 and the fourth gear 125, is installed in the auxiliary frame 160 to be inserted into the second coupling hole of the auxiliary frame 160, Both ends are coupled to an inner surface of the second gear 121 and an inner surface of the fourth gear 125.

The second inner gear pin may be formed to have the same outer diameter as the inner diameter of the second coupling hole. In addition, when the second internal gear pin is used as a separate part from the second gear 121 and the fourth gear 125, the second internal gear pin is coupled to the second gear 121 and the fourth gear 125 by coupling. Although employ | adopted, the structure provided with the integral structure in the inner surface of either the 2nd gear 121 or the 4th gear 125 can also be employ | adopted.

In this case, since the second gear 121 and the fourth gear 125 are coupled to engage the first gear 111 and the third gear 115, respectively, the second gear part 120 has a first gear ( According to the rotation of the 111 and the third gear 115, the semi-automatic rotation is caused by the reaction force of the first gear 111 and the third gear 115. In this case, rotation directions of the first gear 111, the third gear 115, the second gear 121, and the fourth gear 125 are opposite to each other. For example, when the first gear 111 and the third gear 115 are rotated in the clockwise direction, the second gear 121 and the fourth gear 125 are rotated in the counterclockwise direction.

As a result, when the saddle 260 is rotated clockwise to rotate the first gear pin 112 and the third gear pin 116, the rear wheel 280 by the second gear 121 and the fourth gear 125. ) Rotates counterclockwise.

Referring to FIG. 12, the gear module 100 according to an embodiment of the present invention may further include a fastening bracket 130.

The fastening bracket 130 includes a pair of first fastening brackets 131 and a first fastening bracket 136.

Specifically, the first fastening bracket 131 is installed on the first gear 111 and the second gear 121 to maintain the first gear 111 and the second gear 121 engaged state, Through holes 132 and 133 into which the first gear pin 112 and the second gear pin 122 are inserted are formed.

In addition, the second fastening bracket 136 is installed on the second gear 121 and the fourth gear 125 so as to keep the second gear 121 and the fourth gear 125 engaged with each other. A through hole into which the gear pin 122 and the fourth gear pin 126 are inserted is formed.

If necessary, the first fastening bracket 131 and the second fastening bracket 136 may have a “단면” type or “??” type structure having a transverse cross section so that one end and the other end of the seat tube 270 are inserted thereon. It may be formed to.

The folding bicycle according to another embodiment of the present invention also needs to lift the saddle 260 for the folding process similarly to the folding bicycle according to an embodiment of the present invention.

As such, when the user lifts the saddle 260 of the bicycle, the seat tube 270 connected to the saddle 260 is rotated counterclockwise.

When the seat tube 270 is rotated in a counterclockwise direction, the first gear pin 112 and the third gear pin 116 connected to one end and the other end of the seat tube 270 are provided with a rotational force to provide a first gear pin ( 112 and the third gear pin 116 is rotated, and then the first gear pin 112 and the third gear pin 116 provides a rotational force to the first gear 111 and the third gear 115 to provide a first force. The first gear 111 and the third gear 115 are rotated.

When the first gear 111 and the third gear 115 are rotated, the second gear 121 and the fourth gear 125 meshed with the first gear 111 and the third gear 115 are the first. As the gear 111 and the third gear 115 rotate, the opposite directions of the first gear 111 and the third gear 115 are rotated, and accordingly, the second gear 121 and the fourth gear 125 are rotated. Provides a rotational force to the chainstay 320 so that the chainstay 320 is rotated clockwise.

As a result, when the user of the bicycle lifts the saddle 260 and moves the saddle 260 to the handlebar 210 as shown in FIGS. 13 and 14, the gear module 100 installed on the bicycle is the saddle 260. By transmitting the rotational force of the rear wheel 280 to move the rear wheel 280 semi-automatically so that the rear wheel 280 overlaps with the front wheel 230.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It can be understood that it is possible.

100: gear module 110: first gear portion
111: first gear 112: first gear pin
113: first hinge 115: third gear
116: third gear pin 117: first internal gear pin
120: second gear portion 121: second gear
122: second gear pin 123: second hinge
125: fourth gear 126: fourth gear pin
127: second internal gear pin 130: fastening bracket
131: first fastening bracket 136: second fastening bracket
140: first cover bracket 150: second cover bracket
160: auxiliary frame

Claims (10)

In a folding bike,
Is installed on one side of the bicycle frame is provided with a gear module comprising one or more gears for rotating the rear wheel clockwise or counterclockwise according to the longitudinal direction of the bicycle,
The gear is a folding bicycle using a gear, characterized in that installed to form an internal angle of 10 ° to 21 ° with the central axis with respect to the longitudinal center axis of the bicycle. delete The method of claim 1, wherein the gear module
A first gear unit installed between the vehicle body and the seat tube connected to the saddle to rotate the saddle along the longitudinal direction of the bicycle;
And a second gear unit disposed between the vehicle body and the seatstay connected to the rear wheels, the second gear unit meshing with the first gear and rotating the rear wheels in a direction opposite to the saddle according to the rotation of the saddle. The method of claim 3, wherein the gear module
A first cover bracket which covers the first gear part and connects the vehicle body and the saddle;
And a second cover bracket which covers the second gear part and connects the vehicle body and the seat stay. The method of claim 4, wherein
The first gear unit is provided in the center of the first gear, the first gear and the first gear pin for transmitting rotational force to the first gear, and one side is connected to the first cover bracket and the other side corresponding to the one side A first hinge connected to the first gear pin to rotate the first gear pin according to a counterclockwise movement of the first cover bracket,
The second gear part has a second gear, and one side is connected to the second cover bracket and the other side corresponding to the one side is connected to the second gear to rotate the second cover bracket clockwise according to the rotation of the second gear. Folding bicycle using a gear, characterized in that consisting of a second hinge. The method of claim 4, wherein the contact surface of the first cover bracket and the second cover bracket
Folding bicycle using a gear, characterized in that each magnet is provided with a magnetic force acting on each other. The method of claim 4, wherein the gear module
A second gear pin provided at the center of the second gear;
And a fastening bracket having a through hole in which the first gear pin and the second gear pin are inserted so as to maintain the first gear and the second gear in engagement with each other. The method of claim 1, wherein the gear module
An auxiliary frame installed between the body and the chainstay,
A first gear unit installed at an auxiliary frame adjacent to the vehicle body and coupled to a seat tube connected to the saddle to rotate the saddle along the longitudinal direction of the bicycle; and
A gear installed in an auxiliary frame adjacent to the chain stay, the second gear part engaged with the first gear part and coupled to the chain stay to rotate the rear wheel in a direction opposite to the saddle according to the rotation of the saddle; Folding bike. The method of claim 8,
The auxiliary frame is configured to form a first coupling hole and a second coupling hole spaced apart from each other,
The first gear unit is provided with a first gear and a third gear facing each other, a first gear pin provided in the outer center of the first gear and fitted to one end of the seat tube, and in the outer center of the third gear And a third gear pin fitted with the other end of the seat tube, and a first inner gear pin inserted into the first coupling hole and both ends of which are coupled to the inner surface of the first gear and the inner surface of the third gear. ,
The second gear unit faces each other and the second gear and the fourth gear which is coupled to one end of the chainstay, the second coupling hole is inserted into both ends of the second gear is coupled to the inner side of the second gear and the inner side of the fourth gear Folding bicycle using a gear, characterized in that consisting of a second internal gear pin. The method of claim 9, wherein the gear module
A second gear pin provided at the outer center of the second gear and a third gear pin provided at the outer center of the third gear;
A first fastening bracket having a through hole into which the first gear pin and the second gear pin are inserted so as to maintain the first gear and the second gear engaged;
And a second fastening bracket having a through hole into which the second gear pin and the fourth gear pin are inserted so as to keep the second gear and the fourth gear engaged with each other.

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